:root {
  --bg: #0b0f10;
  --bg-alt: #11171a;
  --border: #1f2b2e;
  --text: #d3dbdb;
  --text-dim: #7c8b8d;
  --accent: #3ddc84;
  --accent-dim: #2a9d5c;
  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "Fira Code", "Consolas", "Liberation Mono", monospace;
  --sans: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  scroll-behavior: smooth;
}

::selection {
  background: var(--accent);
  color: #06120a;
}

/* language toggle: hide the language not currently active */
html[data-lang="en"] .lang-ro { display: none; }
html[data-lang="ro"] .lang-en { display: none; }

.accent { color: var(--accent); }

.prompt {
  color: var(--accent);
  font-family: var(--mono);
}

.cursor {
  display: inline-block;
  color: var(--accent);
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.5rem;
  background: rgba(11, 15, 16, 0.9);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.prompt-brand {
  font-family: var(--mono);
  font-size: 1rem;
  white-space: nowrap;
}

.nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 0.9rem;
}

.nav a {
  color: var(--text-dim);
  text-decoration: none;
}

.nav a:hover {
  color: var(--accent);
}

#lang-toggle {
  font-family: var(--mono);
  font-size: 0.85rem;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  border-radius: 4px;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
}

#lang-toggle:hover {
  background: var(--accent);
  color: #06120a;
}

main {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.hero {
  padding: 3rem 0 2rem;
}

.term-block {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  font-family: var(--mono);
  font-size: 0.95rem;
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre-wrap;
}

.out {
  color: var(--text);
}

.section {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
}

.section h2 {
  font-family: var(--mono);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.section p {
  line-height: 1.7;
  color: var(--text);
}

.note {
  color: var(--text-dim);
  font-style: italic;
  font-size: 0.9rem;
}

.skills {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.skills li {
  padding: 0.75rem 1rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  line-height: 1.6;
}

.skills strong {
  color: var(--accent);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.1rem;
}

.card .icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.card h3 {
  margin: 0 0 0.4rem;
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--accent);
}

.card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.5;
}

.mail-btn {
  display: inline-block;
  margin-top: 0.75rem;
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--text);
  text-decoration: none;
  background: var(--bg-alt);
  border: 1px solid var(--accent-dim);
  border-radius: 6px;
  padding: 0.6rem 1rem;
}

.mail-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.footer {
  text-align: center;
  padding: 2rem 0 3rem;
  font-family: var(--mono);
  color: var(--text-dim);
  font-size: 0.85rem;
}

@media (max-width: 480px) {
  .topbar { flex-wrap: wrap; }
  .nav { order: 3; width: 100%; }
}